Cita APA (7th ed.)

Edmund C. Sutton. (2012). Observational Astronomy (1.). Cambridge University Press.

Cita Chicago (17th ed.)

Edmund C. Sutton. Observational Astronomy. 1. Cambridge University Press, 2012.

Cita MLA (8th ed.)

Edmund C. Sutton. Observational Astronomy. 1. Cambridge University Press, 2012.